Standard Operating Procedure for the Disc Granulation Production Line
- Pre-Startup Preparations
Inspect the entire disc granulation production line equipment—including the crusher, mixer, disc granulator, dryer, screening machine, and conveyors—to ensure they are in good working order. Verify that the bearings and speed reducers have adequate lubrication, and check that the disc liners and scrapers are functioning normally, free from looseness or damage. Clear away any residual materials, hard lumps, or debris remaining inside the equipment.
- No-Load Startup
Start the equipment in the prescribed sequence under no-load conditions: first activate the screening, drying, and conveying units; then start the disc granulator, mixer, and batching/feeding systems. Allow the equipment to run idle for 2 to 3 minutes while observing for any abnormal vibrations, unusual noises, or irregular rotational speeds. Once confirmed to be operating correctly, begin feeding the material; *never* attempt to start the equipment while it is loaded with material.
III. Normal Granulation Production
Feed material into the mixer at a steady, continuous rate. Once thoroughly mixed, convey the material into the disc granulator. Adjust the position of the scrapers promptly to prevent material accumulation, wall adhesion, or bridging inside the disc, thereby ensuring that the material maintains a continuous rolling motion.
- Post-Granulation Processing
The newly formed wet granules are transported via conveyor into the dryer for drying, and subsequently passed through the screening machine for classification. Qualified granules are directed to the coating, cooling, and finished product storage bins; fine powders and undersized fragments are returned to the granulation stage as “recycled material” for reprocessing.
- Shutdown and Routine Maintenance
After stopping the material feed, allow the equipment to continue running for a period of time to ensure all remaining material has cleared the system, then proceed to shut down the units in reverse sequence. Clean away any adhering or accumulated material inside the disc to maintain equipment cleanliness. Periodically inspect wear parts, lubrication levels, disc liners, and scrapers; perform regular maintenance to extend the equipment’s service life and ensure stable production, high output, and excellent granulation quality.
